@BobZ
Hi
You need to compile the plugin with same compiler as Creator itself
That means visual studio compiler ( mingw wont work) and also same version of
Qt ca. So a Qt 4.8 plugin wont load in a much newer creator.
alt text

so here i should use around Qt 5.11 and vs2015, 32 bit.
This is due to the plugins being DLLs and it simply cant load
Dlls produced by much older compiler and the Qt used must also be
at lease same major version.